EP2272060A2 - Feuille hybride d isolation phonique - Google Patents

Feuille hybride d isolation phonique

Info

Publication number
EP2272060A2
EP2272060A2 EP09733882A EP09733882A EP2272060A2 EP 2272060 A2 EP2272060 A2 EP 2272060A2 EP 09733882 A EP09733882 A EP 09733882A EP 09733882 A EP09733882 A EP 09733882A EP 2272060 A2 EP2272060 A2 EP 2272060A2
Authority
EP
European Patent Office
Prior art keywords
absorbing sheet
sound absorbing
hybrid
sound
micrometers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP09733882A
Other languages
German (de)
English (en)
Other versions
EP2272060B1 (fr
EP2272060A4 (fr
Inventor
Mari Nonogi
Makoto Sasaki
Tetsuya Noro
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
3M Innovative Properties Co
Original Assignee
3M Innovative Properties Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 3M Innovative Properties Co filed Critical 3M Innovative Properties Co
Publication of EP2272060A2 publication Critical patent/EP2272060A2/fr
Publication of EP2272060A4 publication Critical patent/EP2272060A4/fr
Application granted granted Critical
Publication of EP2272060B1 publication Critical patent/EP2272060B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/172—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using resonance effects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/18—Layered products comprising a layer of metal comprising iron or steel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B23/00—Layered products comprising a layer of cellulosic plastic substances, i.e. substances obtained by chemical modification of cellulose, e.g. cellulose ethers, cellulose esters, viscose
    • B32B23/04—Layered products comprising a layer of cellulosic plastic substances, i.e. substances obtained by chemical modification of cellulose, e.g. cellulose ethers, cellulose esters, viscose comprising such cellulosic plastic substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B23/042—Layered products comprising a layer of cellulosic plastic substances, i.e. substances obtained by chemical modification of cellulose, e.g. cellulose ethers, cellulose esters, viscose comprising such cellulosic plastic substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B23/00—Layered products comprising a layer of cellulosic plastic substances, i.e. substances obtained by chemical modification of cellulose, e.g. cellulose ethers, cellulose esters, viscose
    • B32B23/20—Layered products comprising a layer of cellulosic plastic substances, i.e. substances obtained by chemical modification of cellulose, e.g. cellulose ethers, cellulose esters, viscose comprising esters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/306—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl acetate or vinyl alcohol (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B32B27/365—Layered products comprising a layer of synthetic resin comprising polyesters comprising polycarbonates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/28—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer comprising a deformed thin sheet, i.e. the layer having its entire thickness deformed out of the plane, e.g. corrugated, crumpled
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/30—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/02—Physical, chemical or physicochemical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/03—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers with respect to the orientation of features
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/05—Interconnection of layers the layers not being connected over the whole surface, e.g. discontinuous connection or patterned connection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B32B7/14—Interconnection of layers using interposed adhesives or interposed materials with bonding properties applied in spaced arrangements, e.g. in stripes
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/162—Selection of materials
    • G10K11/168—Plural layers of different materials, e.g. sandwiches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2270/00—Resin or rubber layer containing a blend of at least two different polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/10—Properties of the layers or laminate having particular acoustical properties
    • B32B2307/102—Insulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
    • B32B2307/212—Electromagnetic interference shielding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/302—Conductive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/546—Flexural strength; Flexion stiffness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2457/00—Electrical equipment

Definitions

  • sound absorbers are used in a number of different disciplines for absorbing sound.
  • sound absorbers are often used for electric and electronic equipment. With the continuing emphasis on size reduction and cost reduction of such equipment, thin and flexible sound absorbers are desirable.
  • an electromagnetic shielding property is also desirable.
  • the present disclosure provides a hybrid sound absorbing sheet including a microperforated film (that is, comprising through-micro bores), and a perforated metal foil disposed on the microperforated film.
  • the perforated metal foil may be embossed in various patterns.
  • the hybrid sound absorbing sheet may be relatively thin (for example, it may have a total thickness of about 50 micrometers to 1600 micrometers, about 70 micrometers to 1400 micrometers or 70 micrometers to 750 micrometers); and, it can allow the use of a backing airspace that is relatively thin (for example, about 1 mm to about 20 mm or about 1 mm to about 10 mm).
  • the hybrid sound absorbing sheet may provide effective sound absorption in various frequencies.
  • the hybrid sound absorbing sheet of the present disclosure has an electromagnetic shielding property and a thermal conductivity, which are enhanced by the metal content of the sheet.
  • the hybrid sound absorbing sheet can be used in relatively limited or narrow spaces as are often found in various kinds of electric and electronic equipment or the like.
  • a hybrid sound absorbing sheet comprising a microperforated film comprising through-micro bores present in a first pattern; and, a perforated metal foil comprising holes in a second pattern; wherein the perforated metal foil is disposed on the microperforated film, and wherein the first pattern of the through- micro bores in the microperforated film and the second pattern of the perforated metal foil comprise non-aligned patterns.
  • a method of absorbing sound comprising the steps of: providing a hybrid sound absorbing sheet comprising a microperforated film comprising through-micro bores present in a first pattern and a perforated metal foil comprising holes in a second pattern, wherein the perforated metal foil is disposed on the microperforated film, and wherein the first pattern of the through-micro bores in the microperforated film and the second pattern of the perforated metal foil comprise non-aligned patterns; and, positioning the hybrid sound absorbing sheet between an acoustic source and a sound- reflecting surface, with a backing airspace between the hybrid sound absorbing sheet and the sound-reflecting surface.
  • a sound absorber comprising: a sound-reflecting surface and a hybrid sound absorbing sheet disposed near the sound-reflecting surface with a backing airspace between the hybrid sound absorbing sheet and the sound-reflecting surface, wherein the hybrid sound absorbing sheet comprises a microperforated film comprising through-micro bores present in a first pattern and a perforated metal foil comprising holes in a second pattern, wherein the perforated metal foil is disposed on the microperforated film, and wherein the first pattern of the through-micro bores in the microperforated film and the second pattern of the perforated metal foil comprise non- aligned patterns.
  • Fig. 1 is a cross-sectional view of one embodiment of the hybrid sound absorbing sheet of the present disclosure.
  • Fig. 2 is a cross-sectional view of another embodiment of the hybrid sound absorbing sheet of the present disclosure.
  • Fig. 3 is a top view of an exemplary microperforated film of the present disclosure.
  • Fig. 4 is a view of several exemplary embossing patterns of the metal foil of the present disclosure.
  • Fig. 5 is a graph of the sound absorption coefficient of hybrid sound absorbing sheets with various backing airspace thicknesses.
  • Fig. 6 is a graph of the sound absorption coefficient of a perforated metal foil and of various hybrid sound absorbing sheets.
  • Fig. 7 is a graph of the sound absorption coefficient of hybrid sound absorbing sheets containing microperforated films of various thicknesses.
  • Fig. 9 is a graph of the sound absorption coefficient of hybrid sound absorbing sheets with various embossing patterns of the perforated metal foil.
  • Fig. 10 is a graph of the sound absorption coefficient of various films and hybrid sound absorbing sheets.
  • Fig. 11 is a graph illustrating an electromagnetic shielding property of various unperforated metal foils and perforated metal foils.
  • Fig. 12 is a cross-sectional view of another embodiment of the hybrid sound absorbing sheet of the present disclosure.
  • Fig. 1 is a cross-sectional view of one embodiment of the hybrid sound absorbing sheet of the present disclosure.
  • hybrid sound absorbing sheet 100 includes a microperforated film 102 and a perforated metal foil 104 disposed on the microperforated film 102.
  • the microperforated film includes through-micro bores 106 that are present in a first pattern and pass completely through film 102.
  • through-micro bores 106 have a diameter range of about 10 micrometers to about 200 micrometers.
  • through-micro bores 106 are present at a density of from about 77,500 bores per square meter to about 6,200,000 bores per square meter, or about 620,000 bores per square meter to about 3,100,000 bores per square meter.
  • microperforated film 102 comprises an air permeability of about 0.1 seconds per 100 cc to about 300 seconds per 100 cc (as measured using a GURLEY TYPE DENSOMETER available from Toyo Seiki Seisaku-sho, Ltd, using procedures as outlined in JIS-L-1906).
  • the air permeability value in the Gurley method shows the time it takes 100 cc of air to pass through a film (seconds per 100 cc).
  • the microperforated film can include, but is not limited to, a resin film having flexibility.
  • Exemplary polymeric materials that can be used for the film include, but are not limited to, polyesters such as polyethylene terephthalate (PET), polybutylene terephthalate (PBT) or polyethylene naphthalate (PEN); polycarbonate; polyolefm such as polyethylene, polypropylene or polybutylene; polyvinyl resins such as polyvinyl chloride, polyvinylidene chloride or polyvinyl acetals; cellulose ester resins such as cellulose triacetate or cellulose acetate. Blends and/or copolymers of these materials may also be used.
  • the thickness of the microperforated film 102 is about 10 micrometers to about 250 micrometers.
  • the weight per unit area of the film is not limited, but can be from about 5 grams per square -meters to about 500 grams per square -meters.
  • the perforated metal foil 104 includes holes 108 in a second pattern.
  • the holes have a diameter of about 0.1 mm to about 3.0 mm and a density of about 12,000 holes per square meter to about 6,200,000 holes per square meter, or about 70,000 holes per square meter to about 3,100,000 holes per square meter.
  • the perforated metal foil can be made of materials including, but not limited to, copper, aluminum, iron, tin, titanium, nickel, lead, zinc, silver, gold, and mixtures, blends, and/or alloys thereof. Specific alloys which may find use include for example brass, bronze, stainless steel, beryllium copper or phosphor bronze.
  • the through microbores in the film, and/or the holes in the foil may be circular or noncircular (e.g., ovals, slits, squares, etc.), and may be regular or irregular.
  • the term "diameter" refers to the diameter of a circular opening having the same area as the opening of the non-circular shaped micro-bore or hole.
  • the microbores and/or holes may also vary in size. In such a case, the diameter refers to the average diameter of the total population of microbores or holes.
  • they are positioned such that at least a portion of the metal foil is in contact with a portion of the microperforated film. In a specific embodiment, they are positioned such that only a portion of the metal foil is in contact with the microperforated film (or, alternatively, is in contact with an adhesive that is itself in contact with the film). Such a configuration can result in an air gap being present between at least a portion of the microperforated film and at least a portion of the perforated metal foil, which may result in improved sound absorption.
  • the foil is perforated in such a manner as to leave protruding portions (e.g., a protruding rim) around the holes (for example, as shown in an exemplary manner for holes 108 and 208 of Figs. 1 and 2, respectively), in one embodiment the non-protruding (smooth) side of the foil can be placed adjacent the microperforated film.
  • the foil is embossed (as discussed later with regard to
  • Such embossing may advantageously result in the presence of an air gap in between at least a portion of the perforated foil, and at least a portion of the microperforated film.
  • the microperforated film and the perforated metal foil are disposed together (e.g. attached together) by any known method such as adhesive bonding, stapling or stitching.
  • an adhesive is used, with the adhesive being applied (to either the foil or the film) in discrete locations. For example, spraying with droplets of a liquid or hot melt adhesive, or dotting or spot gluing with a liquid adhesive or a hot melt adhesive, or discrete application of bonding tape may be performed. (An example of an adhesive present in a discrete manner is illustrated in Figs. 1 and 2 by the presence of adhesive elements 112 and 212, respectively).
  • Such discrete application of adhesive, and/or bonding the film and the foil only in discrete locations may advantageously result in the presence of an air gap in between at least a portion of the perforated foil, and the microperforated film, even the metal foil is not embossed.
  • an air gap between the microperforated film and the perforated foil may be produced by laminating a layer having air such as mesh layer or microporous material layer between the film and the foil.
  • the hybrid sound absorbing sheet as disclosed herein is produced by providing a microperforated film and a perforated foil, and disposing them adjacent each other.
  • the diameter and spacing of the through-micro bores in the microperforated film are different from the diameter and spacing of the perforations in the foil.
  • the through-micro bores in the film and the perforations in the foil will not all line up with each other. That is, while some of the through-micro bores may be in overlapping relation with a hole in the foil, at least some of the through-microbores will be in overlapping relation with a solid portion of the foil (that is, a portion not containing a hole).
  • Such an arrangement (illustrated in an exemplary manner in Figs. 1 and 2), which is defined herein by the terminology that the microperforated film and the perforated foil comprise non-aligned patterns, is distinguished from an arrangement in which each hole in the film layer is aligned with a hole in the foil layer (such as would be made, for example, in an operation in which a foil layer and a film layer are disposed together, and are then perforated or microperforated in a single operation).
  • Fig. 2 is a cross-sectional view of another embodiment of the hybrid sound absorbing sheet of the present disclosure.
  • hybrid sound absorbing sheet 200 includes a microperforated film 202 and a perforated metal foil 204 disposed on the microperforated film 202.
  • the microperforated film includes through-micro bores 206, which are the same as the through-micro bores 106 mentioned above. Example materials, thickness, and the weight per unit area of the film are the same as mentioned above.
  • the pitch (spacing) of the pattern may be, but is not limited to, about 1.0 mm to about 20.0 mm.
  • the depth of the embossed features may be, but is not limited to, about 30 micrometers to about 1000 micrometers, about 50 micrometers to about 800 micrometers, or about 50 micrometers to about 150 micrometers.
  • the thickness of the (unembossed) metal foil can be, but is not limited to, about 10 micrometers to about 250 micrometers.
  • the thickness of the embossed foil (including the emboss depth) can be about 40 micrometers to about 1250 micrometers, about 60 micrometers to about 1050 micrometers or about 60 micrometers to about 400 micrometers.
  • hybrid sound absorbing sheet 100/200 can be placed at or near a sound-reflecting surface 1220, as shown in an exemplary manner in Fig. 12.
  • either the film layer or the foil layer can be placed facing the acoustic source (e.g., the incoming airborne sound).
  • hybrid sound absorbing sheet 100/200 may have a backing air space (gap) 1202 between the sheet and sound- reflecting surface 1220.
  • the hybrid sound absorbing sheet of the present disclosure may exhibit a good sound absorbing effect even if the backing air space is relatively thin (such as, for example, about 1 mm to about 20 mm, about 1 mm to about 10 mm or about 1 mm to about 5 mm). If desired, the hybrid sound absorbing sheet may be formed into shapes.
  • the hybrid sound absorbing sheet can comprise flanges 1203 at one or more edges of the sheet, such that the sheet may be attached to sound-reflective surface 1220 by flanges 1203, with at least a portion of the sheet being sufficiently far from the sound- reflective surface that an air gap 1202 is present between that portion of the sheet and sound-reflective surface 1220.
  • Fig. 3 is a view of one embodiment of the microperforated film of the present disclosure.
  • the film 300 includes through-micro bores 306 denoted by the dots in Fig. 3.
  • the film may exhibit a Gurley air permeability of about 0.1 seconds per 100 cc to about 300 seconds per 100 cc.
  • Such an air permeability may be produced, for example, by microperforating about 77,500 bores per square meter to about 6,200,000 bores per square meter, or about 620,000 bores per square meter to about 3,100,000 bores per square meter, with the bores comprising a diameter of from about 10 micrometers to about 200 micrometers.
  • Other combinations of bore diameter and bore density may also be used to provide this range of air permeability.
  • Fig. 4a to 4c are views of exemplary embossing patterns of the metal foil.
  • Fig. 4a shows an exemplary square grid pattern with about 1.5 mm pitch
  • Fig. 4b shows an exemplary diagonal square grid pattern with about 2.5 mm pitch
  • Fig. 4c shows an exemplary square grid pattern with about 6.5 mm pitch
  • Fig. 5 is a graph showing the sound absorption coefficient of hybrid sound absorbing sheets with various backing airspace thicknesses, in comparison to a nonwoven sheet.
  • spectrum 500 shows the sound absorption coefficient for a nonwoven sheet of about 10 mm thickness.
  • the 10 mm nonwoven sheet comprised a melt-blown polypropylene web of about 200 grams/square meter density, with a spun-bonded scrim.
  • backing airspace means the distance between a sound-reflecting surface which is on the opposite side of the hybrid sound absorbing sheet from the acoustic source.
  • the perforated copper foil included holes having a diameter of about 0.7 mm with a density of about 72,600 holes per square meter.
  • the copper foil was embossed in square grid pattern similar to that shown in Fig. 4a, with a pitch of about 1.5 mm.
  • the embossing depth was about 72 micrometers.
  • the thickness of the copper foil including the emboss depth was about 105 micrometers.
  • the hybrid sound absorbing sheet was tested for sound absorption at various backing airspace thicknesses, as shown in Fig. 5. All sound-absorption spectra (in this and all other examples) were generated in accordance with ASTM E 1050, using well-known impedance tube testing.
  • the sample was positioned in the impedance tube by spanning a 29 mm diameter section of the film or hybrid sheet across opening of the impedance tube, with the edges of the sample adhered to the flange of the impedance tube opening using double-sided adhesive, so that the sheet was disposed normal to the incident sound (in these experiments, the hybrid sound absorbing sheet was positioned so that the acoustic source faced the microperforated PET film).
  • the reflective surface of the impedance tube (behind the sample from the acoustic source) was adjusted to provide a backing airgap of thickness (depth) shown in the various spectra of Fig. 5.
  • Fig. 6 is a graph showing the sound absorption coefficient of a metal foil and of hybrid sound absorbing sheets, in comparison to a nonwoven sheet.
  • Spectrum 600 depicts the sound absorption coefficient of the 10 mm thick non- woven sheet of Fig. 5, without a backing airspace.
  • Spectrum 602 depicts the sound absorption coefficient of a 35 micrometer thick perforated copper foil with 1.5 mm pitch square grid pattern (similar to that shown in Fig. 4a) emboss having about 72 micrometers depth. The thickness of the copper foil including the emboss depth was about 107 micrometers.
  • the perforated copper foil included holes having a diameter of about 0.7 mm with a density of about 72,600 holes per square meter.
  • the microperforated film and the perforated foil were disposed together to form the hybrid sound absorbing sheets of this example in similar manner to that described above for the sheet of Fig. 5 (that is, by spraying hot-melt adhesive onto the smooth side of the foil and contacting the microperforated film to the adhesive-bearing side of the foil).
  • Spectrum 604 depicts the sound absorption coefficient of a hybrid sound absorbing sheet including the above-described perforated copper foil and the microperforated PET film of spectrum 502.
  • Spectrum 606 depicts the sound absorption coefficient of a hybrid sound absorbing sheet comprising the above-described perforated copper foil and a 10 micrometer thick microperforated PE (polyethylene) film.
  • the PE film included the same number of bores and bore diameter as the PET film of spectrum 604.
  • the air permeability and the weight of the PE film were about 0.3 seconds per 100 cc and 8.2 grams per square meter, respectively.
  • the backing airspace for the sound absorber for spectra 602, 604 and 606 was 10 mm. All the spectra in Fig. 6 were generated in similar manner to those described with reference to Fig. 5.
  • Fig. 6 All the spectra in Fig. 6 were generated in similar manner to those described with reference to Fig. 5.
  • the air permeability of the PET films was about 0.4 seconds per 100 cc for 702, about 0.8 seconds per 100 cc for 704 and about 1.6 seconds per 100 cc for 706.
  • the weight of the PET film was about 17 grams per square meter for 702, about 53 grams per square meter for 704 and about 70 grams per square meter for 706.
  • the total thickness of the sounds absorbers for 702, 704 and 706 were 119 micrometers, 145 micrometers, and 157 micrometers, respectively.
  • the backing airspace was 10 mm.
  • the microperforated film and the perforated foil were disposed together to form the hybrid sound absorbing sheets in similar manner to that described above for the sheet of Fig. 5. All the spectra in Fig. 7 were generated in similar manner to those described with reference to Fig. 5.
  • Fig. 8 is a graph showing the sound absorption coefficient of hybrid sound absorbing sheets with various hole diameters of the perforated metal foil, in comparison to a nonwoven sheet.
  • Spectrum 800 depicts the sound absorption coefficient of the 10 mm thick non- woven sheet of Fig. 5, without a backing airspace.
  • Each sample used for spectra 802, 804 and 806 included a 35 micrometer thick perforated copper foil with 1.5 mm pitch square grid embossed pattern (similar to that shown in Fig. 4a) with an embossing depth of about 72 micrometers, and the microperforated PET film of spectrum 502.
  • the thickness of perforated copper foil including emboss depth was about 107 micrometers.
  • the hole diameters of the perforated copper foil was 0.5 mm for 802, for 0.7 mm for 804 and 1.5 mm for 806.
  • the density of the holes of the perforated copper foil was about 72,600.
  • the backing airspace was 10 mm.
  • the microperforated film and the perforated foil were disposed together to form the hybrid sound absorbing sheets in similar manner to that described above for the sheet of Fig. 5. All the spectra in Fig. 8 were generated in similar manner to those described with reference to Fig. 5.
  • Fig. 9 is a graph showing the sound absorption coefficient of hybrid sound absorbing sheets with various embossing patterns of the perforated metal foil, in comparison to a nonwoven sheet.
  • Spectrum 900 depicts the sound absorption coefficient of the 10 mm thick non- woven sheet of Fig. 5, without a backing airspace.
  • Each sample for spectra 902 to 906 included the microperforated PET film of spectrum 502 and a 30 micrometer thick perforated hard aluminum foil.
  • the backing airspace was 10 mm.
  • the aluminum foil had 0.4 mm diameter holes with a density of about 171,000.
  • An embossing pattern of a 1.5 mm pitch square grid pattern (Fig. 4a) was used for 902, a 2.5 mm pitch diagonal square grid pattern (Fig. 4b) for 904 and a 6.5 mm pitch square grid pattern (Fig. 4c) for 906.
  • the depth of the embossing pattern was about 72 micrometers for 902, about
  • Fig. 10 is a graph showing the sound absorption coefficient of films and of hybrid sound absorbing sheets with various combinations, in comparison to a nonwoven sheet.
  • Spectrum 1000 depicts the sound absorption coefficient of the 10 mm thick non- woven sheet of Fig. 5, without a backing airspace.
  • Spectrum 1002 depicts the sound absorption coefficient of the hybrid sound absorbing sheet described with reference to Fig. 5.
  • Spectrum 1004 depicts the sound absorption coefficient of a hybrid sound absorbing sheet comprising the microperforated PET film of spectrum 502 (1002), and a 30 micrometer thick perforated hard aluminum foil of spectrum 902.
  • Spectrum 1006 depicts the sound absorption coefficient of a hybrid sound absorbing sheet comprising the microperforated PET film of spectrum 502 (1002) and the perforated aluminum foil of spectrum 1004, except that the aluminum foil was not embossed.
  • Spectrum 1008 depicts the sound absorption coefficient of the combination of a 12 micrometer thick unperforated PET film having about 17 grams per square meter of weight and the unembossed, perforated aluminum foil of spectrum 1006.
  • Spectrum 1010 depicts the sound absorption coefficient of the perforated aluminum foil of spectrum 1006 (that is, the perforated foil of spectra 1006 and 1008, in the absence of any film, microperforated or not).
  • Spectrum 1012 depicts the sound absorption coefficient of the microperforated PET film of spectrum 502 (1002) (that is, the microperforated PET film of spectra 1002, 1004 and 1006, in the absence of any perforated or unperforated foil).
  • Spectrum 1014 depicts the sound absorption coefficient of the unperforated PET film of spectrum 1008, in the absence of any foil.
  • Fig. 10 All the spectra in Fig. 10 were generated in similar manner to those described with reference to Fig. 5 Each sample used for spectra 1002, 1004, 1006 and 1008 was laminated by spot gluing, with the surface of the PET film facing the smooth side of the foil (that is, the side from which the foil was perforated). The spot gluing method resulted in a small air layer being present between portions of the PET film and the metal foil.
  • Fig. 11 is a graph illustrating an electromagnetic shielding property of various unperforated metal foils and perforated metal foils. All the spectra in Fig. 11 were generated in accordance with the KEC method, which is a shielding effectiveness measuring method developed by Kansai Electronic Industry Development Center.
  • EMI shielding effectiveness testing equipment Based on electric field distribution in a TEM cell, EMI shielding effectiveness testing equipment has a testing space which symmetrically holds a sample between two opposite surfaces on a plane perpendicular to a signal transmission axis.
  • a transmitting antenna is set in a way to generate an electromagnetic field and the signal level at a receiving antenna is measured.
  • Field intensity attenuation is calculated by comparison of the signal levels at the transmitting and receiving antennas and this attenuation is a measure of shielding effectiveness.
  • the testing space between the outgoing part and the receiving part was 10 mm and a frequency of 0.1 to 1000 MHz was used for the measurement. Generally, it is can be said that an article having 20 dB or more of shielding effect shields 90 % or more of electromagnetic waves.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Laminated Bodies (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)

Abstract

L’invention concerne une feuille hybride d’isolation phonique qui comporte un film micro-perforé et une feuille métallique perforée disposée sur le film micro-perforé. L’invention concerne également une feuille hybride d’isolation phonique qui comporte un film micro-perforé et une feuille métallique perforée disposée sur le film micro-perforé, ladite feuille métallique perforée étant estampée.
EP09733882.6A 2008-04-22 2009-04-10 Feuille hybride d'isolation phonique Active EP2272060B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US4684408P 2008-04-22 2008-04-22
PCT/US2009/040209 WO2009131855A2 (fr) 2008-04-22 2009-04-10 Feuille hybride d’isolation phonique

Publications (3)

Publication Number Publication Date
EP2272060A2 true EP2272060A2 (fr) 2011-01-12
EP2272060A4 EP2272060A4 (fr) 2017-07-26
EP2272060B1 EP2272060B1 (fr) 2019-09-18

Family

ID=41217367

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09733882.6A Active EP2272060B1 (fr) 2008-04-22 2009-04-10 Feuille hybride d'isolation phonique

Country Status (7)

Country Link
US (1) US8371419B2 (fr)
EP (1) EP2272060B1 (fr)
JP (3) JP2011519433A (fr)
KR (1) KR101793278B1 (fr)
CN (1) CN102077272B (fr)
BR (1) BRPI0910612A2 (fr)
WO (1) WO2009131855A2 (fr)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8469145B2 (en) * 2008-04-14 2013-06-25 3M Innovative Properties Company Multilayer sound absorbing sheet
US8573358B2 (en) * 2008-05-22 2013-11-05 3M Innovative Properties Company Multilayer sound absorbing structure comprising mesh layer
SE535926C2 (sv) * 2011-05-05 2013-02-19 Scania Cv Ab Anordning för dämpning av ljud och motorfordon innefattande en sådan anordning
DE102011107484A1 (de) * 2011-07-08 2013-01-10 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Schallabsorber für eine Wand oder eine Decke
WO2013028511A2 (fr) * 2011-08-19 2013-02-28 Acoustic Ceiling Products, L.L.C. Panneaux acoustiques pour recouvrir un mur, un plafond, ou analogue
CN102628880A (zh) * 2012-03-27 2012-08-08 中国新时代国际工程公司 具有屏蔽和吸音双重效果的高压试验室屏蔽装置及方法
WO2014024786A1 (fr) * 2012-08-07 2014-02-13 ポリマテック株式会社 Feuille d'isolation sonore à diffusion de chaleur et structure d'isolation sonore à diffusion de chaleur
US9493949B2 (en) * 2014-03-20 2016-11-15 Vanair Design Panel and panel structure for ventilation and both reactive and dissipative sound dampening
TWI558890B (zh) * 2014-12-12 2016-11-21 財團法人工業技術研究院 具微孔隙金屬箔的吸音結構
US9251778B2 (en) 2014-06-06 2016-02-02 Industrial Technology Research Institute Metal foil with microcracks, method of manufacturing the same, and sound-absorbing structure having the same
US20160040942A1 (en) * 2014-08-08 2016-02-11 Halla Visteon Climate Control Corp. Heat exchanger with integrated noise suppression
WO2016149181A1 (fr) * 2015-03-19 2016-09-22 Board Of Regents, The University Of Texas System Intégration structurelle d'objets métalliques dans des structures fabriquées par impression 3d
JP6798490B2 (ja) * 2015-06-09 2020-12-09 Ａｇｃ株式会社 フィルムおよび吸音構造体
WO2016208507A1 (fr) * 2015-06-22 2016-12-29 富士フイルム株式会社 Structure d'insonorisation, grille et cloison
JP6684106B2 (ja) * 2016-02-12 2020-04-22 株式会社 いそのボデー 防犯用パネル、これを用いたボックス体及び車両ボディ
JP6480638B2 (ja) * 2016-03-29 2019-03-13 富士フイルム株式会社 防音構造、開口構造、筒状構造、窓部材および仕切り部材
WO2017216824A1 (fr) * 2016-06-14 2017-12-21 タイガースポリマー株式会社 Épurateur d'air
CN106836538A (zh) * 2016-12-30 2017-06-13 常熟南师大发展研究院有限公司 一种建筑吸音板
RU2677621C1 (ru) * 2017-10-04 2019-01-17 федеральное государственное бюджетное образовательное учреждение высшего образования "Тольяттинский государственный университет" Низкошумное техническое помещение
CN108928050B (zh) * 2017-12-14 2020-09-08 中航复合材料有限责任公司 含微穿孔面板的蜂窝夹层结构的制备方法、设备及结构
JP7352925B2 (ja) * 2018-12-03 2023-09-29 国立研究開発法人宇宙航空研究開発機構 圧力変動吸収構造体
JP2021165774A (ja) * 2020-04-06 2021-10-14 株式会社ヒロタニ 車両用遮熱防音材
CN114525743B (zh) * 2022-03-11 2023-06-02 中铁二院工程集团有限责任公司 声屏障排烟吸声体及封闭式声屏障
DE202022104291U1 (de) 2022-07-28 2023-11-02 Reinz-Dichtungs-Gmbh Verkleidung für eine Komponente eines elektrischen Antriebssystems

Family Cites Families (65)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3177970A (en) 1961-01-21 1965-04-13 Gomma Antivibranti Applic Sound-absorbing panels with tapered holes therethrough
US3214565A (en) 1963-01-30 1965-10-26 Armstrong Cork Co Ceiling tile adapted for electrical heating and sound absorption
US4128683A (en) * 1978-04-11 1978-12-05 Toyota Jidosha Kogyo Kabushiki Kaisha Auto ceiling panel and its manufacturing process
DE2930123A1 (de) 1979-07-25 1981-02-12 Wilhelmi Holzwerk Schallschluckende bauplatte
JPS6083365A (ja) 1983-10-13 1985-05-11 Nec Corp 半導体装置
JPS60135997A (ja) 1983-12-26 1985-07-19 株式会社日立製作所 吸音材
JPH0323319A (ja) 1989-06-19 1991-01-31 Nissan Motor Co Ltd 過給機付内燃機関の制御装置
JP2778754B2 (ja) 1989-09-22 1998-07-23 住友スリーエム株式会社 電磁遮蔽ガスケツトテープ
JP2522604B2 (ja) 1990-04-26 1996-08-07 株式会社ユニックス 吸音材およびその製造方法
JPH0437994A (ja) 1990-06-01 1992-02-07 Fujitsu Ltd 入出金機内の紙幣表裏反転制御処理方式
JP2840130B2 (ja) 1990-11-21 1998-12-24 日本碍子株式会社 吸音体
CA2091288C (fr) 1992-03-13 1995-11-28 Toru Morimoto Membrane absorbant le son et les vibrations
JPH064398A (ja) 1992-06-22 1994-01-14 Mitsubishi Electric Corp 情報処理装置
JPH0659680A (ja) * 1992-08-07 1994-03-04 Yunitsukusu:Kk 吸音構造体
DE4315759C1 (de) 1993-05-11 1994-05-05 Fraunhofer Ges Forschung Schallabsorbierendes Glas- oder transparentes Kunstglasbauteil
JPH07213418A (ja) 1994-02-07 1995-08-15 Unix:Kk 吸音カーテンおよび吸音カーテン構造体
JP3072238B2 (ja) 1994-05-25 2000-07-31 株式会社ユニックス 吸音カーテンおよび吸音カーテン構造体ならびに吸音パネル
US5744763A (en) * 1994-11-01 1998-04-28 Toyoda Gosei Co., Ltd. Soundproofing insulator
JPH0913943A (ja) 1995-06-28 1997-01-14 Nippon Tokushu Toryo Co Ltd 断熱吸音材
JPH09217955A (ja) 1996-02-09 1997-08-19 Kucho Giken Kogyo Kk 吸音フレキシブルダクト
DE19626676A1 (de) 1996-07-03 1998-01-08 Kaefer Isoliertechnik Vorrichtung zur Verminderung von Schallpegeln in Gebäuden
JPH1088689A (ja) 1996-09-12 1998-04-07 Nisshin Steel Co Ltd 吸音フィルムを部分的に貼り合わせた吸音構造体
US5912442A (en) 1997-07-02 1999-06-15 Trw Inc. Structure having low acoustically-induced vibration response
JPH1162047A (ja) 1997-08-20 1999-03-05 Tokai Rubber Ind Ltd 吸音シート
JP3108400B2 (ja) 1998-01-26 2000-11-13 住友特殊金属株式会社 耐食性のすぐれた永久磁石
JP2000020070A (ja) 1998-07-06 2000-01-21 Tamagawa Seni Kogyosho:Kk 吸音シート
US6617002B2 (en) 1998-07-24 2003-09-09 Minnesota Mining And Manufacturing Company Microperforated polymeric film for sound absorption and sound absorber using same
JP2000144968A (ja) 1998-11-04 2000-05-26 Kawasaki Steel Corp 吸音材及び吸音パネル
EP1020846B1 (fr) * 1999-01-14 2018-09-19 Nichias Corporation Structure d'absorption du son
US6555246B1 (en) 1999-02-02 2003-04-29 Rieter Automotive (International) Ag Method of producing a sound-absorbent insulating element and insulating element produced according to this method
JP4037994B2 (ja) 1999-06-16 2008-01-23 アキレス株式会社 農業用合成樹脂製フィルム
PL201313B1 (pl) 1999-08-11 2009-03-31 Entwicklungsgesellschaft Fuer Element osłonowy lub kształtowy dla środków komunikacji
JP2001132132A (ja) 1999-11-05 2001-05-15 Yoshino Gypsum Co Ltd 有孔吸音板及びその製造方法
US6345688B1 (en) 1999-11-23 2002-02-12 Johnson Controls Technology Company Method and apparatus for absorbing sound
MXPA02010223A (es) * 2000-04-17 2003-05-23 Rieter Automotive Int Ag Metodo para producir una pila de laminas acusticamente efectiva para una pantalla termoaislante de un vehiculo automotor.
US6598701B1 (en) * 2000-06-30 2003-07-29 3M Innovative Properties Company Shaped microperforated polymeric film sound absorbers and methods of manufacturing the same
JP2002057488A (ja) 2000-08-11 2002-02-22 Unix:Kk 吸音特性と電磁波シールド特性を兼備した材料
JP2002082671A (ja) 2000-09-06 2002-03-22 Nichias Corp 吸音構造体
DE50105790D1 (de) 2000-09-09 2005-05-04 Hp Chem Pelzer Res & Dev Ltd Bodenbelag mit hoher geräuschmindernder wirkung
FR2817994B1 (fr) * 2000-12-08 2003-02-28 Eads Airbus Sa Panneau acoustique sandwich
JP2004529030A (ja) 2001-05-22 2004-09-24 リーテル・テクノロジーズ・アーゲー 音吸収保護マット
US6769512B2 (en) 2002-08-02 2004-08-03 C.T.A. Acoustics Acoustical insulation laminate with polyolefin layer and process for making
JP2004126487A (ja) 2002-10-02 2004-04-22 Junsei:Kk ハニカム材層が空気層と発泡体層の複合構造層からなる吸音構造体
DE10253832A1 (de) 2002-11-18 2004-05-27 Carcoustics Tech Center Gmbh Schallisolierender Hitzeschutzschild
JP2004264374A (ja) 2003-02-24 2004-09-24 Kobe Steel Ltd 薄膜を用いた吸音構造
JP2004353294A (ja) 2003-05-29 2004-12-16 Unix:Kk 透光型膜振動吸音板および透光型吸音パネル
DE10340011A1 (de) 2003-08-29 2005-04-07 Bayerische Motoren Werke Ag Schalldämpfende Beschichtungen, Verfahren zu deren Herstellung und deren Verwendung
WO2005024778A1 (fr) * 2003-09-05 2005-03-17 Kabushiki Kaisha Kobe Seiko Sho Structure d'absorption phonique et procede de production correspondant
JP3530522B1 (ja) 2003-10-17 2004-05-24 株式会社タケヒロ 超軽量な防音材
JP4012141B2 (ja) 2003-12-09 2007-11-21 株式会社小森コーポレーション 版排出装置
DE20319319U1 (de) * 2003-12-12 2005-04-28 Carcoustics Tech Center Gmbh Schallabsorbierendes Hitzeschild
JP2005283703A (ja) 2004-03-29 2005-10-13 Inoac Corp 吸音材
WO2005106840A1 (fr) * 2004-04-30 2005-11-10 Kabushiki Kaisha Kobe Seiko Sho Structure poreuse absorbant le son
JP4567513B2 (ja) * 2004-04-30 2010-10-20 株式会社神戸製鋼所 多孔質吸音構造体
ES2245240B1 (es) 2004-06-03 2007-03-16 Consejo Sup. Investig. Cientificas. Unidades de insercion microperforadas para su uso como absorbentes acusticos.
JP2006047628A (ja) 2004-08-04 2006-02-16 Toyobo Co Ltd 吸音断熱材
JP2006153926A (ja) 2004-11-25 2006-06-15 Bridgestone Kbg Co Ltd 複合吸音構造体
JP2006199276A (ja) * 2004-12-24 2006-08-03 Kobe Steel Ltd 吸音構造
JP2006323204A (ja) 2005-05-19 2006-11-30 Bridgestone Kbg Co Ltd 複層吸音構造体
JP2007127908A (ja) 2005-11-04 2007-05-24 Achilles Corp 吸音フィルム
JP2007291834A (ja) 2006-03-31 2007-11-08 Yamaha Corp 吸音パネル及び吸音パネルの製造方法
US20100247848A1 (en) 2006-05-30 2010-09-30 Airbus Deutschland Gmbh Sandwich element for sound-absorbing inner cladding of transport means, especially for sound-absorbing inner cladding of aircraft fuselage cells
US8469145B2 (en) 2008-04-14 2013-06-25 3M Innovative Properties Company Multilayer sound absorbing sheet
US8573358B2 (en) 2008-05-22 2013-11-05 3M Innovative Properties Company Multilayer sound absorbing structure comprising mesh layer
SG2014014567A (en) * 2013-02-22 2014-09-26 Bayer Materialscience Ag Process for preparing polyether polyols

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2009131855A2 *

Also Published As

Publication number Publication date
BRPI0910612A2 (pt) 2020-08-04
JP2017054133A (ja) 2017-03-16
JP2011519433A (ja) 2011-07-07
US8371419B2 (en) 2013-02-12
CN102077272B (zh) 2014-09-10
JP6367893B2 (ja) 2018-08-01
KR101793278B1 (ko) 2017-11-02
EP2272060B1 (fr) 2019-09-18
KR20110008226A (ko) 2011-01-26
JP6109122B2 (ja) 2017-04-05
JP2015007791A (ja) 2015-01-15
WO2009131855A2 (fr) 2009-10-29
EP2272060A4 (fr) 2017-07-26
WO2009131855A3 (fr) 2010-01-28
US20110180348A1 (en) 2011-07-28
CN102077272A (zh) 2011-05-25

Similar Documents

Publication Publication Date Title
US8371419B2 (en) Hybrid sound absorbing sheet
US8573358B2 (en) Multilayer sound absorbing structure comprising mesh layer
US8469145B2 (en) Multilayer sound absorbing sheet
JP6561200B2 (ja) 防音構造、及び防音構造の調整方法
TWI439224B (zh) 電磁波吸收膜及使用此電磁波吸收膜之電磁波吸收體
JP2007299907A (ja) 電磁波を伝導又は吸収する特性を有する構造体
US20090029094A1 (en) Structure with capability of conducting/absorbing electromagnetic waves
DK3039955T3 (en) Magnetic field protective and shielding multilayer textile construction
KR100772261B1 (ko) 박막을 이용한 흡음 구조
CN113692614A (zh) 吸声材料
WO2020213138A1 (fr) Matériau absorbant acoustique

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20101117

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA RS

DAX Request for extension of the european patent (deleted)
A4 Supplementary search report drawn up and despatched

Effective date: 20170626

RIC1 Information provided on ipc code assigned before grant

Ipc: B32B 15/08 20060101ALI20170620BHEP

Ipc: B32B 15/04 20060101ALI20170620BHEP

Ipc: G10K 11/16 20060101AFI20170620BHEP

Ipc: G10K 11/168 20060101ALI20170620BHEP

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20190412

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602009059880

Country of ref document: DE

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1182239

Country of ref document: AT

Kind code of ref document: T

Effective date: 20191015

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20190918

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190918

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191218

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191218

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190918

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190918

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190918

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190918

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191219

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 1182239

Country of ref document: AT

Kind code of ref document: T

Effective date: 20190918

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200120

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190918

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190918

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190918

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190918

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190918

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190918

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190918

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190918

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190918

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200224

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602009059880

Country of ref document: DE

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG2D Information on lapse in contracting state deleted

Ref country code: IS

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190918

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200119

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20200331

Year of fee payment: 12

26N No opposition filed

Effective date: 20200619

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190918

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190918

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200430

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200410

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200430

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200430

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20200430

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200430

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20200410

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200410

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200410

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 602009059880

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20211103

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190918

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190918

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190918

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190918